Chrome V8 Zero-Day CVE-2026-11645 Exploited in the Wild - Patch Now

Summary

Google has released security updates to fix 74 vulnerabilities in Chrome, including CVE-2026-11645, a high-severity out-of-bounds memory access flaw in the V8 engine that is being actively exploited. The vulnerability allows remote attackers to execute arbitrary code via a crafted HTML page. This marks the fifth actively exploited Chrome zero-day this year, with users urged to update immediately.

Full text

Chrome V8 Zero-Day CVE-2026-11645 Exploited in the Wild - Patch Now Ravie LakshmananJun 09, 2026Vulnerability / Browser Security Google has released security updates to address 74 vulnerabilities, including one that has come under active exploitation in the wild. The high-severity vulnerability, tracked as CVE-2026-11645 (CVSS score: 8.8), has been described as an out-of-bounds memory access in V8, Chrome's JavaScript and WebAssembly engine. "Out-of-bounds read and write in V8 in Google Chrome prior to 149.0.7827.103 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page," reads a description of the flaw in the NIST's National Vulnerability Database (NVD). A security researcher named "303f06e3" has been credited with discovering and reporting the flaw on April 27, 2026. The researcher has been awarded a bug bounty of $55,000 for responsible disclosure. As is customary in these cases, Google acknowledged that an "exploit for CVE-2026-11645 exists in the wild," but stopped short of sharing additional specifics to ensure that a majority of the users are updated with a fix and to prevent further exploitation. With the latest development, Google has addressed a total of five actively exploited Chrome zero-days since the start of the year. This includes CVE-2026-2441, CVE-2026-3909, CVE-2026-3910, and CVE-2026-5281. For optimal protection, users are advised to update their Chrome browser to versions 149.0.7827.102/.103 for Windows and Apple macOS, and 149.0.7827.102 for Linux. To make sure the latest updates are installed, users can navigate to More > Help > About Google Chrome and select Relaunch. Users of other Chromium-based browsers, such as Microsoft Edge, Brave, Opera, and Vivaldi, are also advised to apply the fixes as and when they become available. Found this article interesting? Follow us on Google News, Twitter and LinkedIn to read more exclusive content we post. SHARE     Tweet Share Share Share SHARE  browser security, Code Execution, cybersecurity, Google Chrome, V8, Vulnerability, Zero-Day ⚡ Top Stories This Week Google June 2026 Android Update Patches 124 Flaws, One Actively Exploited Oracle WebLogic CVE-2024-21182 Added to KEV Catalog After Active Exploitation Dashlane Discloses Brute-Force Attack, Encrypted Vaults of Fewer Than 20 Users Downloaded Miasma Supply Chain Attack Compromises Red Hat npm Packages with Credential-Stealing Worm ⚡ Weekly Recap: New Linux Flaw, PAN-OS Exploit, AI-Powered Attacks, OAuth Phishing and More OpenAI Codex Authentication Tokens Stolen in codexui-android npm Supply Chain Attack PAN-OS GlobalProtect Authentication Bypass (CVE-2026-0257) Under Active Exploitation ChatGPhish Vulnerability Turns ChatGPT Web Summaries Into a Phishing Surface Attackers Use LLM Agent for Post-Exploitation After Marimo CVE-2026-39987 Exploit Threat Actors Exploit Critical FortiClient EMS Flaw to Deploy Credential Stealer Microsoft Slams Public Zero-Day Disclosures Amid GitHub Researcher Account Removal ThreatsDay Bulletin: Claude Security Plugin, Azure Priv-Esc, Kali365 MFA Bypass, FIFA Scams +15 More Malicious npm Package Stole Files From Claude AI User Directory via GitHub GlassWorm Malware Takedown Disrupts Developer Supply Chain Attack Infrastructure AI Chatbot Recommendations Redirect Users to Cryptojacking Malware Sites Microsoft Patches SharePoint RCE Flaw CVE-2026-45659 Across Server Versions ⭐ Featured Resources Your Employees Are Using AI in Ways You Can’t See – 2026 State of AI Report Learn How to Stop Attacks Before They Reach Your EDR – With PHASR Watch AI Turn Vulnerabilities Into Working Exploits in Minutes (See the Demo) [Guide] The Real Security Risks of Shadow AI (And Where You’re Exposed)

Indicators of Compromise

• cve — CVE-2026-11645
• cve — CVE-2026-2441
• cve — CVE-2026-3909
• cve — CVE-2026-3910
• cve — CVE-2026-5281

Entities